re-enable rp registration

tests/pipelines/bicep-build-to-validate.yml

@@ -142,14 +142,14 @@ jobs:
             fi
             az group create --name $(ResourceGroupName) --location $(Location)
 
-#       - task: Bash@3
-#         displayName: Az CLI Register Resource Providers for PR
-#         name: register_providers
-#         inputs:
-#           targetType: "inline"
-#           script: |
-#             az account set --subscription $(subscriptionId)
-#             az provider register -n 'Microsoft.Insights'
+      - task: Bash@3
+        displayName: Az CLI Register Resource Providers for PR
+        name: register_providers
+        inputs:
+          targetType: "inline"
+          script: |
+            az account set --subscription $(subscriptionId)
+            az provider register -n 'Microsoft.Insights'
 
       - task: Bash@3
         displayName: Az CLI Deploy Management Groups for PR